How Do I...Read and Write XML?

This sample illustrates how data can be streamed between components. XML data is parsed by using the XmlReader, and then written out by using the XmlWriter.

The following code reads the book price, calculates a discounted price, and then writes a price element that includes the original and discounted prices.

double originalPrice = 0.0; originalPrice = reader.ReadElementContentAsDouble(); ... double discountedPrice = originalPrice - (originalPrice * 0.25); writer.WriteStartElement("price"); writer.WriteAttributeString("alternative", "25% discount"); writer.WriteAttributeString("originalPrice", originalPrice.ToString()); writer.WriteValue(discountedPrice); writer.WriteEndElement(); Dim originalPrice As Double = 0.0 originalPrice = reader.ReadElementContentAsDouble() ... Dim discountedPrice As Double = originalPrice - originalPrice * 0.25 writer.WriteStartElement("price") writer.WriteAttributeString("alternative", "25% discount") writer.WriteAttributeString("originalPrice", originalPrice.ToString()) writer.WriteValue(discountedPrice) writer.WriteEndElement() double originalPrice = 0.0; originalPrice = reader->ReadElementContentAsDouble(); ... double discountedPrice = originalPrice - (originalPrice * 0.25); writer->WriteStartElement("price"); writer->WriteAttributeString("alternative", "25% discount"); writer->WriteAttributeString("originalPrice", originalPrice.ToString()); writer->WriteValue(discountedPrice); writer->WriteEndElement();